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Views: 7 Author: Site Editor Publish Time: 2024-02-29 Origin: Site
You can choose the pump that is more suitable for you through the following comparisons:
Pump Comparison: Centrifugal vs Positive Displacement
Property | Centrifugal | Positive Displacement |
Effective Viscosity Range | Efficiency decreases with increasing viscosity (max. 200 Cp) | Efficiency increases with increasing viscosity |
Pressure tolerance | Flow varies with changing pressure | Flow insensitive to changing pressure |
Efficiency decreases at both higher and lower pressures | Efficiency increases with increasing pressure | |
Priming | Required | Not required |
Flow (at constant pressure) | Constant | Pulsing |
Shearing (separation of emulsions, slurries, biological fluids, food stuffs) | High speed damages shear-sensitive mediums | Low internal velocity. Ideal for pumping shear sensitive fluids |